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@@ -849,7 +849,11 @@ which are older than the room's maximum retention period. Synapse will also
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filter events received over federation so that events that should have been
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purged are ignored and not stored again.
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-The message retention policies feature is disabled by default.
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+The message retention policies feature is disabled by default. Please be advised
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+that enabling this feature carries some risk. There are known bugs with the implementation
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+which can cause database corruption. Setting retention to delete older history
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+is less risky than deleting newer history but in general caution is advised when enabling this
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+experimental feature. You can read more about this feature [here](../../message_retention_policies.md).
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This setting has the following sub-options:
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* `default_policy`: Default retention policy. If set, Synapse will apply it to rooms that lack the
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